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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::LanguageDetection do
let_it_be(:project) { create(:project, :repository) }
let_it_be(:ruby) { create(:programming_language, name: 'Ruby') }
let_it_be(:haskell) { create(:programming_language, name: 'Haskell') }
let(:repository) { project.repository }
let(:detection) do
[{ value: 66.63, label: "Ruby", color: "#701516", highlight: "#701516" },
{ value: 12.96, label: "JavaScript", color: "#f1e05a", highlight: "#f1e05a" },
{ value: 7.9, label: "Elixir", color: "#e34c26", highlight: "#e34c26" },
{ value: 2.51, label: "CoffeeScript", color: "#244776", highlight: "#244776" },
{ value: 1.51, label: "Go", color: "#2a4776", highlight: "#244776" },
{ value: 1.1, label: "MepmepLang", color: "#2a4776", highlight: "#244776" }]
end
let(:repository_languages) do
[RepositoryLanguage.new(share: 10, programming_language: ruby)]
end
subject { described_class.new(repository, repository_languages) }
before do
allow(repository).to receive(:languages).and_return(detection)
end
describe '#languages' do
it 'returns the language names' do
expect(subject.languages).to eq(%w[Ruby JavaScript Elixir CoffeeScript Go])
end
end
describe '#insertions' do
let(:programming_languages) { [ruby, haskell] }
let(:detection) do
[{ value: 10, label: haskell.name, color: haskell.color }]
end
it 'only includes new languages' do
insertions = subject.insertions(programming_languages)
expect(insertions).not_to be_empty
expect(insertions.first[:project_id]).to be(project.id)
expect(insertions.first[:programming_language_id]).to be(haskell.id)
expect(insertions.first[:share]).to be(10)
end
end
describe '#updates' do
it 'updates the share of languages' do
first_update = subject.updates.first
expect(first_update).not_to be_nil
expect(first_update[:programming_language_id]).to eq(ruby.id)
expect(first_update[:share]).to eq(66.63)
end
it 'does not include languages to be removed' do
ids = subject.updates.map { |h| h[:programming_language_id] }
expect(ids).not_to include(haskell.id)
end
context 'when silent writes occur' do
let(:repository_languages) do
[RepositoryLanguage.new(share: 66.63, programming_language: ruby)]
end
it "doesn't include them in the result" do
expect(subject.updates).to be_empty
end
end
end
describe '#deletions' do
let(:repository_languages) do
[RepositoryLanguage.new(share: 10, programming_language: ruby),
RepositoryLanguage.new(share: 5, programming_language: haskell)]
end
it 'lists undetected languages' do
expect(subject.deletions).not_to be_empty
expect(subject.deletions).to include(haskell.id)
end
end
end
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